http://www.resourceinvestor.com/2013/02/21/fear-in-gold-market-as-hedge-funds-and-retail-sell?ref=hp

http://www.advancedtrading.com/infrastructure/forecasters-caught-napping-by-pace-of-cu/240148913

http://wallstreetsectorselector.com/2013/02/vix-blasts-off-on-wednesday/#

http://newsandinsight.thomsonreuters.com/Legal/News/2013/02_-_February/Corzine_ban_faces_uphill_battle_at_futures_regulator/

http://www.bloomberg.com/news/2013-02-20/crude-options-volatility-jumps-as-underlying-futures-sink-1-9-.html

http://online.barrons.com/article/SB50001424052748704103204578316052342394758.html?mod=BOL_da_spd

http://www.chicagobusiness.com/article/20130219/NEWS01/130219738/former-cboe-head-alger-b-duke-chapman-dies-at-81

http://www.forbes.com/sites/robertlenzner/2013/02/20/making-20000-times-your-money-on-heinz-call-options-requires-inside-information/

http://www.ftseglobalmarkets.com/issues/issue-68-february-march-2013/competition-heats-up-in-equity-options.html

http://www.tradersmagazine.com/news/nyse-puts-block-crosses-onto-floor-traders-handheld-devices-110895-1.html

http://derivative-news.fincad.com/derivatives-regulations/expected-timeline-for-finalizing-otc-derivatives-regulations-not-enough-says-opinion-piece-2-3216/

http://www.investopedia.com/articles/optioninvestor/09/bear-vertical-put-spread.asp#axzz2LS7XU9jl